/*
 * Copyright (c) 2008, University of Aarhus.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - Neither the name of the University of Aarhus nor the names
 *   of its contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @author: Morten Tranberg Hansen <mth@cs.au.dk>
 * @date:   October 16 2008	
 * 
 */

package dk.sensobyg.base;

import org.apache.commons.configuration.HierarchicalConfiguration;
import org.apache.commons.configuration.SubnodeConfiguration;
import org.apache.commons.configuration.XMLConfiguration;
import org.apache.commons.configuration.tree.xpath.XPathExpressionEngine;
import org.apache.log4j.Logger;

import dk.sensobyg.meta.SensorType;

import java.net.URI;
import java.util.List;

public class WrapperFactory {

	private transient static Logger log = Logger.getLogger("dk.sensobyg.base.WrapperFactory");

	static {
		HierarchicalConfiguration.setDefaultExpressionEngine( new XPathExpressionEngine() );
	}
	
	public static AbstractWrapper createWrapper(Collector collector, String configurationFile) throws Exception {
		// TODO: validate configurationFile towards a DTD.
		
		XMLConfiguration conf = new XMLConfiguration(configurationFile);
		
		Class<AbstractWrapper> wrapperClass = (Class<AbstractWrapper>) Class.forName(conf.getString("/@type"));
		Class<AbstractMote> moteClass = (Class<AbstractMote>) Class.forName(conf.getString("motes/@type"));
		
		AbstractWrapper wrapper = wrapperClass.getConstructor(Collector.class).newInstance(collector);
		wrapper.setName(conf.getString("name"));
		wrapper.setDescription(conf.getString("description"));
		wrapper.setURI(new URI(conf.getString("connection/uri")));
		
		List<SubnodeConfiguration> motesConf = (List<SubnodeConfiguration>) conf.configurationsAt("motes/mote");
		for(SubnodeConfiguration moteConf : motesConf) {
			AbstractMote mote = moteClass.getConstructor(int.class).newInstance(moteConf.getInt("@id"));
			List<SubnodeConfiguration> sensorsConf = (List<SubnodeConfiguration>) moteConf.configurationsAt("sensor");
			for(SubnodeConfiguration sensorConf : sensorsConf) {
				AbstractMote.Sensor s = mote.new Sensor(sensorConf.getLong("@sensorid"), sensorConf.getLong("@typeid"));
				mote.addSensor(s);
			}
			wrapper.addMote(mote);
		}
		return wrapper;
	}
	
}
